Hi all...
I have a RAID0 setup on top of three IDE drives.
mdadm monitor sends me mesages with:
DeviceDisappeared
/dev/md0
Wrong-Level
The RAID seems to be working well. Any pointer on what does this mean ?
PD: I know it is a bit strange raid, see:
annwn:~# cat /proc/partitions
major minor #blocks name
3 0 245117376 hda
3 1 245111706 hda1
22 0 117220824 hdc
22 1 117218241 hdc1
22 64 117220824 hdd
22 65 117218241 hdd1
annwn:~# mdadm -D /dev/md0
/dev/md0:
Version : 00.90.01
Creation Time : Mon Sep 13 17:57:08 2004
Raid Level : raid0
Array Size : 479547968 (457.33 GiB 491.06 GB)
Raid Devices : 3
Total Devices : 3
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Mon Sep 13 17:57:08 2004
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Chunk Size : 64K
UUID : c7c5ec26:ae5a99f9:49fec7a1:7e0dcc69
Events : 0.12
Number Major Minor RaidDevice State
0 3 1 0 active sync /dev/hda1
1 22 1 1 active sync /dev/hdc1
2 22 65 2 active sync /dev/hdd1
--
J.A. Magallon <jamagallon()able!es> \ Software is like sex:
werewolf!able!es \ It's better when it's free
Mandrakelinux release 10.2 (Limited Edition 2005) for i586
Linux 2.6.11-jam14 (gcc 3.4.3 (Mandrakelinux 10.2 3.4.3-7mdk)) #3
On 04.12, Neil Brown wrote:
> On Tuesday April 12, [email protected] wrote:
> > Hi all...
> >
> > I have a RAID0 setup on top of three IDE drives.
> > mdadm monitor sends me mesages with:
> >
> > DeviceDisappeared
> > /dev/md0
> > Wrong-Level
> >
> > The RAID seems to be working well. Any pointer on what does this
> > mean ?
>
> From "man mdadm" (if you know where to look)
>
> Follow or Monitor
> Monitor one or more md devices and act on any state changes.
> This is only meaningful for raid1, 4, 5, 6 or multipath arrays
> as only these have interesting state. raid0 or linear never
> have missing, spare, or failed drives, so there is nothing to
> monitor.
>
> You are presumably trying to monitor a raid0 (which isn't meaningful)
> and mdadm is telling you (in its own idiosyncratic way) that it isn't
> going to monitor it.
>
Thank you very much !! One less mistery in my life ;)
--
J.A. Magallon <jamagallon()able!es> \ Software is like sex:
werewolf!able!es \ It's better when it's free
Mandrakelinux release 10.2 (Limited Edition 2005) for i586
Linux 2.6.11-jam14 (gcc 3.4.3 (Mandrakelinux 10.2 3.4.3-7mdk)) #3
On Tuesday April 12, [email protected] wrote:
> Hi all...
>
> I have a RAID0 setup on top of three IDE drives.
> mdadm monitor sends me mesages with:
>
> DeviceDisappeared
> /dev/md0
> Wrong-Level
>
> The RAID seems to be working well. Any pointer on what does this
> mean ?
From "man mdadm" (if you know where to look)
Follow or Monitor
Monitor one or more md devices and act on any state changes.
This is only meaningful for raid1, 4, 5, 6 or multipath arrays
as only these have interesting state. raid0 or linear never
have missing, spare, or failed drives, so there is nothing to
monitor.
You are presumably trying to monitor a raid0 (which isn't meaningful)
and mdadm is telling you (in its own idiosyncratic way) that it isn't
going to monitor it.
NeilBrown